$"$ Answer Q explain? Highlighted below ; Answer should not exceed three lines $"$

each process

So$,$ such communication mechanisms that we will talk about somehow have to be built around those protection "mechanisms"

These kinds of mechanisms are called inter$-$process communication mechanisms, or we refer to them as IPC

IPC

The IPC mechanisms help transfer data and information from one address space to another, continuing to maintain the protection and isolation that operating systems are trying to enforce

Also, different types of interactions between processes may exhibit different properties

Because of all these differences, IPC mechanisms need to provide flexibility as well as performance

Message Passing IPC

Message $-$ passing IPC:

OS Provides communication channel, e$.$g$.,$ shared buffer

Processes

Write$($send$)/$Read$($Recv$)$ message to$/$from channel

Pros and Cons

The benefits of this approach is that it's really the operating system who will manage this channel

It's the operating system that provides the exact same APIs, the exact same system calls for writing or sending data, and the reading or receiving data from this communication channel

The downside is the overhead $...$Explain? relate to user kernel context switch